That’s what models are for. Many systems are too complex to be fully understood as a whole. But by modelling them, we can still understand why they behaved the

That’s what models are for. Many systems are too complex to be fully understood as a whole. But by modelling them, we can still understand why they behaved they they have, and predict how they will behave. There is no need for any one individual to fully grasp a process for it to be modelled. It really is the whole point of modelling.